64893460

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{36457}}^1$

素因数の和:36555

約数の個数: 24

約数和(自身を含む): 137811240

約数和(自身を除く): 72917780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 36457, 72914, 145828, 182285, 364570, 729140, 3244673, 6489346, 12978692, 16223365, 32446730, 64893460]

約数ペア:

[(1, 64893460), (2, 32446730), (4, 16223365), (5, 12978692), (10, 6489346), (20, 3244673), (89, 729140), (178, 364570), (356, 182285), (445, 145828), (890, 72914), (1780, 36457)]